Invalid conditional directive

[reevespaul]

Firstly - thanks for this - the lsp seems to work out of the box.

But it fell over on the below in my asciidoc file:

ifdef::backend-pdf,backend-docbook5[]

... actual content snipped

endif::backend-pdf,backend-docbook5[]

produces this error:

[acdc] Invalid conditional directive, position: line: 61, column: 1

And sulks - no symbol output.

Removing the ,backend-docbook5[] solves the problem but AFAICT the above syntax is correct:

https://docs.asciidoctor.org/asciidoc/latest/directives/ifdef-ifndef/#checking-multiple-attributes

Apart from that, everything seems OK. I'm getting a diagnostic report and symbols grouped under level 1 headings. Nice.

I'm running this in Kate, btw, with this configuration:

"asdc-lsp": {
	"command": "/home/paul/.cargo/bin/acdc-lsp",
	"url": "https://github.com/nlopes/acdc/tree/main/acdc-lsp",
	"highlightingModeRegex": "^AsciiDoc$"
	},

[reevespaul]

On looking further into this I should add that the above code snippet was in the header matter.

ifdef::backend-pdf,backend-docbook5[]
:title-page:
endif::backend-pdf,backend-docbook5[]

It chokes on the endif and no symbols are output.

When the ifdef::backend-pdf,backend-docbook5[] construct is used in the document body everything is 'fine'. Although that raises another issue. When used in a language server in an editor the parser sees backend-pdf as undefined and prints:

[acdc] Inactive conditional block (ifdef::backend-pdf)

in the diagnostic output. It is technically correct, of course :-)

In fact this applies to all ifdef::backend-...[] constructs. This is not a show stopper - it just fills the diagnostic output with noise.

Is there any way to tell the parser which backends are defined?